JP6999284B2 - Interval adjustment device and support device - Google Patents

Description

The present invention relates to an interval adjusting device and a support device to which the interval adjusting device is applied.

For example, in Patent Document 1, a steam generator, which is a heavy structure arranged in the reactor containment vessel of a nuclear power plant, is supported by the partition wall provided in the reactor containment vessel. Is shown. The steam generator is attached with a ring frame surrounding the upper part and the lower part as a support device, and each ring frame is supported by a plurality of support members with respect to the partition wall.

Japanese Patent No. 2831255

In the support device that supports the steam generator, which is a heavy structure as described above, the influence of heat elongation due to the heat of the steam of the steam generator is applied between the steam generator and the ring frame, or between the ring frame and the support. -A structure that provides a predetermined distance from the member is required. On the other hand, in the event of an earthquake during plant operation, the support needs to properly support the steam generator, so it is necessary to adjust the interval so that it is not too large. Therefore, the accuracy of controlling the distance between the support portion and the support target portion is important.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide an interval adjusting device and a support device capable of adjusting the interval between a support portion and a support target portion with high accuracy.

In order to achieve the above object, the interval adjusting device according to one aspect of the present invention is an interval adjusting device provided between the support portion and the support target portion to adjust the mutual distance, and is the support target. The support member provided so as to face the support surface on the portion and the support surface of the support member are movably supported with respect to the support portion in such a manner that the support surface is close to and separated from the support target portion. Along with this, an interval defining portion for fixing the distance between the support surface and the support target portion is provided so as to be interposed between the support member and the support portion so as to be slidable in a direction intersecting the moving direction of the support member. It is equipped with a wedge member.

Further, in the interval adjusting device according to one aspect of the present invention, a slide support portion that supports the wedge member so as to be slidable, a slide moving portion that slides the wedge member, and a movement restricting portion that regulates the slide movement. And, it is preferable to provide.

Further, in the interval adjusting device according to one aspect of the present invention, the wedge member includes a first wedge member and a second wedge member provided in surface contact with each other in the moving direction of the support member. It is preferable that at least one of the first wedge member and the second wedge member is provided so as to be slidable along the inclination direction of the inclined surface.

Further, in the interval adjusting device according to one aspect of the present invention, the interval is interposed between the support member and the support portion together with the wedge member, and is arranged so as to be removable between the support member and the support portion. It is preferable to provide a rule plate.

In order to achieve the above object, the interval adjusting device according to one aspect of the present invention is an interval adjusting device provided between the support portion and the support target portion to adjust the mutual spacing, and the support portion is described. A first wedge member having a first inclined surface facing the first facing surface and facing the opposite side to the first facing surface, and a second wedge member facing the second facing surface and facing the opposite side to the support target portion. A second wedge member having an inclined surface and having the second inclined surface in surface contact with the first inclined surface of the first wedge member, and at least one of the first wedge member and the second wedge member is said to be the first. At each end extending in the slide moving direction, the material is formed of a material having a thermal expansion coefficient larger than that of each wedge member while being slidably supported along the inclined direction of the one inclined surface and the second inclined surface. A slide support portion that supports the first wedge member and the second wedge member, a slide moving portion that slides and moves at least one of the first wedge member and the second wedge member, and a movement regulation that regulates the slide movement. A portion and a wedge member support portion that movably supports one of the first wedge member and the second wedge member in a direction in which they are close to each other and separated from each other are provided.

In order to achieve the above object, the support device according to one aspect of the present invention is a support device for supporting a heavy-duty structure installed in a radiation controlled area, and is between the support portion and the support target portion. The interval adjusting device according to any one of the above is provided.

According to the present invention, by finely adjusting and filling the distance between the support member and the support portion with the wedge member and fixing the position of the support member specified by the interval defining portion, the support target portion is thermally expanded and the support portion is supported. The interval is adjusted so that contact with the support member can be prevented when moving to the side, and the interval is adjusted so that the support member receives the support target portion and suppresses the vibration when the support target portion vibrates. adjust. As a result, the distance between the support part and the support target part can be made more accurate than the configuration in which the position of the support member specified by the interval defining part is fixed by interposing a shim plate at the distance between the support member and the support part. Can be adjusted.

FIG. 1 is a side view showing a schematic configuration of a support device according to an embodiment of the present invention. FIG. 2 is a plan view showing a schematic configuration of a support device according to an embodiment of the present invention. FIG. 3 is a side view of the interval adjusting device according to the first embodiment of the present invention. FIG. 4 is a plan view of the interval adjusting device according to the first embodiment of the present invention. FIG. 5 is a side view of the interval adjusting device according to the second embodiment of the present invention. FIG. 6 is a plan view of the interval adjusting device according to the second embodiment of the present invention. FIG. 7 is a side view of the interval adjusting device according to the third embodiment of the present invention. FIG. 8 is a plan view of the interval adjusting device according to the third embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

FIG. 1 is a side view showing a schematic configuration of a support device according to the present embodiment. FIG. 2 is a plan view showing a schematic configuration of a support device according to the present embodiment.

The support device described below supports heavy structures installed within the radiation controlled area. The target heavy structures include, for example, in FIGS. 1 and 2, a high-temperature and high-pressure primary coolant supplied from the reactor in a nuclear facility having a pressurized water reactor and a secondary coolant for moving a steam turbine. The steam generator 101 that exchanges heat with and is shown. In addition, the heavy-duty structure may be various structures in a nuclear facility having a pressurized water reactor. Further, the heavy-duty structure is not limited to a nuclear facility having a pressurized water reactor, and may be a heavy structure in a nuclear facility having another reactor such as a boiling water reactor. Further, it may be a heavy-duty structure installed outside the radiation controlled area in the nuclear equipment. Further, the structure is not limited to nuclear power equipment, and may be a heavy-duty structure installed in other equipment such as thermal power generation equipment.

As shown in FIGS. 1 and 2, the steam generator 101, which is a heavy-duty structure, has a body portion 102 having a hollow cylindrical shape that is elongated in the vertical direction and has a closed shape. The lower half of the body 102 has a slightly smaller diameter than the upper half, and connects the lower body 102a forming the lower half, the upper body 102b forming the upper half, and the lower body 102a and the upper body 102b. It is composed of a truncated cone-shaped conical body 102c and an upper mirror 102d provided at the upper end of the upper body 102b. Further, the steam generator 101 is provided with a water chamber mirror 103 at the lower end thereof. The steam generator 101 is provided with a plurality of heat transfer tubes having an inverted U shape and elongated in the vertical direction inside the lower body 102a. Further, the steam generator 101 has an air-water separator that separates the supply water into steam and hot water inside the upper body 102b, and a moisture content that removes the moisture content of the separated steam to bring it into a state close to dry steam. A separator is provided. Further, in the steam generator 101, a water supply pipe 111 for supplying secondary cooling water from the outside into the lower body 102a is connected to the lower part of the upper body 102b. Further, in the steam generator 101, a steam exhaust pipe 112 is connected to the upper end of the upper mirror 102d. Further, in the steam generator 101, the water chamber mirror 103 is separated by the lower body 102a of the body portion 102 and the pipe plate 104, and the inside is divided into two water chambers by a partition wall. One end of the heat transfer tube is communicated with the one water chamber through the tube plate, and the cooling water pipe 113 to which the primary coolant is supplied from the reactor is connected. In the other water chamber, the other end of the heat transfer tube is communicated through the tube plate, and the cooling water pipe 114 for returning the primary coolant to the reactor is connected.

Such a steam generator 101 is installed inside a reactor containment vessel in a radiation controlled area. The reactor containment vessel is firmly formed of concrete. The steam generator 101 is installed in a loop chamber 121 partitioned by a concrete partition wall 122 inside the reactor containment vessel. In the steam generator 101, the water chamber mirror 103 is connected to the bottom floor 123 of the loop chamber 121 by a plurality of (for example, four) support legs 131, and the water supply pipe 111, the steam exhaust pipe 112, and the cooling water described above are connected. By connecting the pipes 113 and 114, they are supported inside the reactor containment vessel. Further, the steam generator 101 is supported by the upper support 132 and the lower support 133, which are the support devices of the present embodiment, between the steam generator 101 and the partition wall 122.

The upper support 132 is provided so as to extend horizontally from the partition wall 122 to the ring frame 132A, which is an octagonal ring frame 132A provided so as to surround the upper end of the lower body 102a of the steam generator 101. The support support 132B, the interval adjusting device 1 provided between the steam generator 101 which is the support target portion and the ring frame 132A which is the support portion, and the support support which is the ring frame 132A which is the support target portion and the support portion. It has an interval adjusting device 1 provided between the 132B and the 132B. The ring frame 132A is provided so as to be suspended from the steam generator 101 side (for example, the conical body 102c).

The lower support 133 is an octagonal ring frame 133A provided around the water chamber mirror 103 of the steam generator 101, and a support support extending horizontally from the partition wall 122 toward the ring frame 133A. The 133B, the interval adjusting device 1 provided between the steam generator 101 which is the support target portion and the ring frame 133A which is the support portion, and the ring frame 133A which is the support target portion and the support support 133B which is the support portion. It has an interval adjusting device 1 provided between the two. The ring frame 133A is provided so as to be suspended from the steam generator 101 side (for example, the lower body 102a or the pipe plate 104).

The interval adjusting device 1 is attached to the ring frames 132A, 133A and the support supports 132B, 133B, which are the support portions, and has a predetermined interval with respect to the steam generator 101 and the ring frames 132A, 133A, which are the support target portions. It is provided, and the influence of the heat elongation of the steam generator 101 and the ring frames 132A and 133A which are the support target parts can be suppressed by the interval, and the influence of the vibration of the steam generator 101 and the ring frames 132A and 133A which are the support target parts. It suppresses.

Hereinafter, each embodiment of the interval adjusting device 1 will be described.

[Embodiment 1]
FIG. 3 is a side view of the interval adjusting device according to the first embodiment. FIG. 4 is a plan view of the interval adjusting device according to the first embodiment.

As described above, the interval adjusting device 1 in the present embodiment faces each other between the steam generator 101, which is a support target portion, and the ring frames 132A, 133A, which are support portions, which are arranged so as to face each other. It is provided between the ring frames 132A and 133A which are the support target portions and the support supports 132B and 133B which are the support portions. In the following description, the steam generator 101 and the ring frames 132A and 133A that are the support target parts are collectively referred to as the support target parts, and the ring frames 132A and 133A and the support supports 132B and 133B that are the support parts are collectively supported. It's called a club.

Further, the interval adjusting device 1 provided between the steam generator 101 which is the support target portion and the ring frames 132A and 133A which are the support portions, and the ring frames 132A and 133A which are the support target portions and the support portion. Since the interval adjusting device 1 provided between the support supports 132B and 133B has the same configuration, they will be described together with the same reference numerals.

The interval adjusting device 1 includes a support member 2, an interval defining portion 3, a wedge member 4, and an interval defining plate 5.

The support member 2 is formed as a plate member having a support surface 2A facing the support target portion (steam generator 101 or ring frames 132A, 133A).

The space defining portion 3 supports the support member 2 with respect to the support portions (ring frames 132A, 133A and support supports 132B, 133B). The spacing defining portion 3 includes a plurality of (four in this embodiment) bolts (also referred to as shredded bolts) 3A composed of only screw portions having no head, and a double nut for fixing each bolt 3A to the support member 2. It has a bolt fixing rib 3C that inserts and supports each bolt 3A, and a fixing nut 3D that is screwed into the bolt 3A and prevented from coming off from the bolt fixing rib 3C.

One end of the bolt 3A is screwed into the support member 2 so as to extend to the support portion side opposite to the side facing the support surface 2A (support target portion side) in the support member 2, and is supported by the double nut 3B. It is fixed to the member 2. The plurality of bolts 3A are arranged in parallel with the extending directions aligned. Further, each bolt 3A is provided so as to penetrate the bolt fixing rib 3C whose other end is fixed to the support portion side. Further, each bolt 3A is provided with a fixing nut 3D screwed to the other end, and is prevented from coming off from the bolt fixing rib 3C by the fixing nut 3D. Therefore, the support member 2 is provided so as to be movable along with the bolt 3A along the extending direction of the bolt 3A so that the support surface 2A approaches and separates from the support target portion via the bolt 3A and the bolt fixing rib 3C. At the same time, the fixing nut 3D restricts the movement of the support surface 2A from approaching the support target portion. That is, in the support member 2, the distance D1 between the support surface 2A and the support target surface 10 facing the support target portion on the support surface 2A is defined by the fixing nut 3D. Then, when the fixing nut 3D is loosened, the interval D1 is narrowed, and when the fixing nut 3D is tightened, the interval D1 is widened.

The wedge member 4 is interposed between the support member 2 and the facing surface 11 facing the support member 2 in the support portions (ring frames 132A, 133A and support supports 132B, 133B) (interval D2). In the present embodiment, the wedge member 4 has a first wedge member 4A and a second wedge member 4B. The first wedge member 4A and the second wedge member 4B face each other between the support member 2 and the facing surface 11 in the support portion (between the support target portion and the support portion arranged so as to face each other). The inclined surfaces 4Aa and 4Ba that are inclined with respect to the orthogonal surfaces (support surface 2A, support target surface 10 and facing surface 11) that are orthogonal to the direction are provided in a form of surface contact. Further, the first wedge member 4A and the second wedge member 4B are parallel to the orthogonal surfaces (support surface 2A, support target surface 10 and facing surface 11) on opposite sides of the inclined surfaces 4Aa and 4Ba. have. Therefore, the wedge member 4 slides and moves at least one of the first wedge member 4A and the second wedge member 4B along the inclined surfaces 4Ab, 4Bb (or the inclined direction of the inclined surfaces 4Aa, 4Ba) for the time being, and the inclined surfaces 4Aa, 4Ba. As the position of the surface contact changes, the total width along the interval D2 between 4Ab and 4Bb changes for the time being. In the present embodiment, the foreground 4Ab of the first wedge member 4A is in surface contact with the spacing plate 5, and the foreground 4Bb of the second wedge member 4B is on the plate surface facing the support surface 2A in the support member 2. There is surface contact.

In addition, in FIGS. 3 and 4, the wedge member 4 shows the relative sliding movement direction between the first wedge member 4A and the second wedge member 4B as a vertical direction, but the arrangement thereof is rotated by 90 degrees. The slide movement direction may be horizontal.

The space defining plate 5 is made of a flat plate material, and the support member 2 defines the space D2 between the support member 2 and the facing surface 11 of the support portions (ring frames 132A, 133A and support supports 132B, 133B) together with the wedge member 4. It is arranged so that it can be inserted and removed between the surface and the facing surface 11 of the support portion. The space defining plate 5 roughly defines the space D2 between the support member 2 and the facing surface 11 of the support portion. On the other hand, the wedge member 4 is defined by expanding the total width between 4Ab and 4Bb for the time being as described above to fill a fine gap of the interval D2 that cannot be defined by the interval defining plate 5.

In the present embodiment, the wedge member 4 is provided with the first wedge member 4A and the second wedge member 4B separately (two in the present embodiment) in the direction orthogonal to the slide moving direction. Further, the spacing defining plate 5 which is a part of the plurality of spacing defining plates 5 and is provided along the immediate surface 4Ab of the first wedge member 4A also has the first wedge member 4A and the second wedge member in the side view direction (horizontal direction). Similar to 4B, it is divided into a plurality (two in this embodiment). In this way, by providing the wedge member 4 in a plurality of portions in the direction orthogonal to the slide moving direction, it is possible to fill and adjust the minute gap of the interval D2 at a plurality of locations in the direction orthogonal to the slide moving direction. Even if 2 is arranged diagonally with respect to the facing surface 11 of the support portions (ring frames 132A, 133A and support supports 132B, 133B), it is possible to fill a fine gap of the interval D2.

In the above-mentioned spacing adjusting device 1, when adjusting the spacing D1 between the supporting surface 2A of the supporting member 2 and the supporting target surface 10 of the supporting target portion (steam generator 101 or ring frames 132A, 133A), the bolt 3A and others are used. By tightening or loosening the fixing nut 3D provided at the end portion, the support surface 2A of the support member 2 is moved relative to the support target surface 10. Then, the interval defining plate 5 and the wedge member 4 are interposed in the interval D2 between the support member 2 and the facing surface 11 of the support portions (ring frames 132A, 133A and the support supports 132B, 133B), and the first wedge member 4A and the second wedge member 4A and the second wedge member 4 are interposed. The wedge member 4B is relatively slid so as to expand the total width of the wedge member 4, and the gap D2 is defined by filling a fine gap of the gap D2 that cannot be specified by the spacing plate 5. In the present embodiment, as shown in FIG. 3, the first wedge member 4A is configured to slide from above to below to increase the total width of the wedge member 4, and the first wedge member 4A is configured. By driving downward with a hammer or the like together with a part of the interval defining plate 5, the minute gap of the interval D2 that cannot be specified by the interval defining plate 5 is filled and the interval D2 is defined.

As described above, in the interval adjusting device 1 of the present embodiment, the support member 2 provided with the support surface 2A facing the support target portion (steam generator 101 or ring frame 132A, 133A) and the support member 2 are supported. The support member 2 is movably supported by the support portions (ring frames 132A, 133A and support supports 132B, 133B) in such a manner that the surface 2A is close to and separated from the support target portion, and the support surface 2A and the support target portion are supported. An interval defining portion 3 for fixing the interval D1 of the facing surface 11, a wedge member 4 interposed between the support member 2 and the support portion and provided so as to be slidable in a direction intersecting the moving direction of the support member 2. To prepare for.

According to this interval adjusting device 1, the interval D2 between the support member 2 and the support portion is finely adjusted and filled with the wedge member 4 to fix the position (interval D1) of the support member 2 defined by the interval defining portion 3. Then, the interval D1 is adjusted so that contact with the support member 2 can be prevented when the support target portion thermally expands and the facing surface 11 moves outward, and the support target portion vibrates when the support target portion vibrates. The interval D1 is adjusted so that the support member 2 can receive the vibration and suppress the vibration. As a result, the support portion and the support target are compared with the configuration in which the position (distance D1) of the support member 2 defined by the spacing defining portion 3 is fixed by interposing a shim plate in the spacing D2 between the supporting member 2 and the supporting portion. The distance from the part can be adjusted with high accuracy.

Further, in the interval adjusting device 1 of the present embodiment, the wedge member 4 is provided with the first wedge member 4A and the second wedge member 4B provided in surface contact with each other's inclined surfaces 4Aa and 4Ba in the moving direction of the support member 2. It is preferable that at least one of the first wedge member 4A and the second wedge member 4B is provided so as to be slidable.

According to the interval adjusting device 1, the wedge member 4 changes the position where the inclined surfaces 4Aa and 4Ba come into contact with each other by sliding movement of at least one of the first wedge member 4A and the second wedge member 4B. The total width of 4 can be changed to adjust a minute gap D2 between the support member 2 and the support portion, and the position (distance D1) of the support member 2 defined by the spacing defining portion 3 can be easily fixed. be able to. As a result, the distance between the support portion and the support target portion can be easily adjusted with high accuracy.

Further, in the interval adjusting device 1 of the present embodiment, the interval defining plate 5 is interposed between the support member 2 and the support portion together with the wedge member 4 and is arranged so as to be removable between the support member 2 and the support portion. It is preferable to prepare.

According to the space adjusting device 1, the space D2 between the support member 2 and the support portion is roughly filled by the space defining plate 5, and the range D2 is finely adjusted and filled by the wedge member 4 to be appropriately set. can. As a result, the distance between the support portion and the support target portion can be adjusted with high accuracy and more easily.

[Embodiment 2]
FIG. 5 is a side view of the interval adjusting device according to the second embodiment. FIG. 6 is a plan view of the interval adjusting device according to the second embodiment.

The interval adjusting device 21 in the present embodiment includes a support member 2, an interval defining portion 3, a wedge member 4, and an interval defining plate 5, similar to the interval adjusting device 1 in the above-described first embodiment. Therefore, the same reference numerals are given to the configurations equivalent to those of the interval adjusting device 1, and the description thereof will be omitted.

The interval adjusting device 21 of the present embodiment further includes a wedge member moving mechanism 6 with respect to the wedge member 4 with respect to the interval adjusting device 1 in the above-described first embodiment.

The wedge member moving mechanism 6 is fixed to the support portions (ring frames 132A, 133A and support supports 132B, 133B) by the fixing portion 6D, and the wedge member 4 (first wedge member 4A and second wedge member 4B) is fixed. Bolts (cutting bolts) 6A extending in the slide moving direction (vertical direction in the present embodiment) and bolts 6A are provided so as to penetrate at both ends of the extending direction of the bolts 6A, and the bolts 6A extend. It has a slide member 6B provided so as to be slidable along a direction, and fixing nuts 6C screwed to bolts 6A on both sides of each slide member 6B in the slide movement direction.

A pair of bolts 6A are provided so as to extend parallel to the slide moving direction of the wedge member 4. Each slide member 6B is continuously provided between both ends of each bolt 6A so as to connect a pair of bolts 6A. A first wedge member 4A and a second wedge member 4B are attached to each slide member 6B, respectively. The first wedge member 4A and the second wedge member 4B are not separately provided in the direction orthogonal to the slide moving direction as in the interval adjusting device 1 in the above-described first embodiment.

That is, the first wedge member 4A is supported so as to be slidable in the extending direction of each bolt 6A via one slide member 6B. Further, the first wedge member 4A slides and moves in the extending direction of each bolt 6A via the slide member 6B by tightening or loosening the fixing nuts 6C on both sides of one slide member 6B in the slide moving direction. However, the slide movement is restricted by tightening the fixing nuts 6C so as to sandwich one of the slide members 6B. Further, the second wedge member 4B is supported so as to be slidably movable in the extending direction of each bolt 6A via the other slide member 6B. The second wedge member 4B slides and moves in the extending direction of each bolt 6A via the slide member 6B by tightening or loosening the fixing nuts 6C on both sides of the other slide member 6B in the slide moving direction. Further, the slide movement is restricted by tightening the fixing nuts 6C so as to sandwich the other slide member 6B. Therefore, each bolt 6A constitutes a slide support portion that slidably supports the wedge member 4 (first wedge member 4A and second wedge member 4B) via each slide member 6B. Further, each fixing nut 6C has a slide moving portion for sliding the wedge member 4 (first wedge member 4A and second wedge member 4B) via each bolt 6A and each slide member 6B, and a movement for restricting the slide movement. It constitutes the regulation department.

As described above, the interval adjusting device 21 of the present embodiment has a slide support portion (slide support portion) that supports the first wedge member 4A and the second wedge member 4B so as to be slidable with respect to the interval adjusting device 1 in the above-described first embodiment. Each bolt 6A), a slide moving portion (each fixing nut 6C) for sliding the first wedge member 4A and the second wedge member 4B, and a movement restricting portion (each fixing nut 6C) for restricting the slide movement are provided. ..

According to the interval adjusting device 21, each fixing nut constituting the slide moving portion and the movement restricting portion allows the slide movement of the first wedge member 4A and the second wedge member 4B with respect to the interval adjusting device 1 in the above-described first embodiment. It can be done by the operation of 6C. That is, the minute gap D2 between the support member 2 and the support portion by the wedge member 4 (first wedge member 4A and second wedge member 4B) can be easily adjusted by operating each fixing nut 6C. As a result, the distance between the support portion and the support target portion (steam generator 101 or ring frames 132A, 133A) can be easily adjusted with high accuracy.

In the above-mentioned interval adjusting device 21, the first wedge member 4A and the second wedge member 4B are slidably moved, but at least one of the first wedge member 4A and the second wedge member 4B is slidably moved. Also, the same effect can be obtained.

[Embodiment 3]
FIG. 7 is a side view of the interval adjusting device according to the third embodiment. FIG. 8 is a plan view of the interval adjusting device according to the third embodiment.

The interval adjusting device 31 in the present embodiment has a support member 2, an interval defining portion 3, and an interval defining plate 5 for the interval adjusting device 1 in the above-described first embodiment and the interval adjusting device 21 in the second embodiment. It is not provided, but is provided with the wedge member 4 and the wedge member moving mechanism 6 of the interval adjusting device 21 in the second embodiment. Therefore, the same reference numerals are given to the configurations equivalent to those of the interval adjusting device 21, and the description thereof will be omitted.

The interval adjusting device 31 of the present embodiment includes a first wedge member 4A, a second wedge member 4B, and a wedge member moving mechanism 6.

The first wedge member 4A faces the support portion (ring frame 132A, 133A or support support 132B, 133B), and the facing surface 11 facing the support target portion (steam generator 101 or ring frame 132A, 133A) in the support portion. It has a first foreground 4Ab that comes into surface contact with. Further, the first wedge member 4A has a first inclined surface 4Aa facing opposite to the first immediate surface 4Ab.

The second wedge member 4B has a second immediate surface 4Bb that faces the support target portion and comes into surface contact with the support target surface 10 facing the support portion in the support target portion. Further, the second wedge member 4B has a second inclined surface 4Ba facing opposite to the second immediate surface 4Bb. The first wedge member 4A and the second wedge member 4B are provided so that the first inclined surface 4Aa and the second inclined surface 4Ba are in surface contact with each other.

That is, in the present embodiment, the first wedge member 4A and the second wedge member 4B are provided alone between the facing surface 11 of the support portion and the support target surface 10 of the support target portion, and at least one of them is first. The first contact surface 4Ab and the second contact surface 4Bb are moved by sliding along the foreground surface 4Ab and the second contact surface 4Bb (or the inclination direction of the inclined surface 4Aa, 4Ba) and changing the position where the inclined surfaces 4Aa, 4Ba come into surface contact with each other. The total width along the distance D3 between the facing surface 11 of the support portion and the support target surface 10 of the support target portion changes. By changing the total width of the first wedge member 4A and the second wedge member 4B, the first contact surface 4Ab of the first wedge member 4A comes into contact with or separates from the facing surface 11 of the support portion, and the second wedge member 4B The second immediate 4Bb of the above is in contact with or separated from the support target surface 10 of the support target portion. Then, when the first contact surface 4Ab of the first wedge member 4A contacts the facing surface 11 of the support portion and the second contact surface 4Bb of the second wedge member 4B contacts the support target surface 10 of the support target portion, the first The wedge member 4A and the second wedge member 4B fill the gap D3 between the facing surface 11 of the support portion and the support target surface 10 of the support target portion.

The wedge member moving mechanism 6 is fixed to the support portions (ring frames 132A, 133A and support supports 132B, 133B) by the fixing portion 6D, and the wedge member 4 (first wedge member 4A and second wedge member 4B) is fixed. Bolts (cutting bolts) 6A extending in the slide moving direction (vertical direction in the present embodiment) and bolts 6A are provided so as to penetrate at both ends of the extending direction of the bolts 6A, and the bolts 6A extend. It has a slide member 6B provided so as to be slidable along a direction, and fixing nuts 6C screwed to bolts 6A on both sides of each slide member 6B in the slide movement direction. Therefore, each bolt 6A constitutes a slide support portion that slidably supports the wedge member 4 (first wedge member 4A and second wedge member 4B) via each slide member 6B. Further, each fixing nut 6C has a slide moving portion for sliding the wedge member 4 (first wedge member 4A and second wedge member 4B) via each bolt 6A and each slide member 6B, and a movement for restricting the slide movement. It constitutes the regulation department. Since this configuration is the same as the interval adjusting device 21 in the above-described second embodiment, detailed description thereof will be omitted.

Further, the wedge member moving mechanism 6 in the present embodiment has a wedge member supporting portion 6E that movably supports one of the first wedge member 4A and the second wedge member 4B in a direction in which they are close to each other and separated from each other. The wedge member support portion 6E is provided on the slide member 6B, and in the present embodiment, the mounting portion 6Ea to which the second wedge member 4B is attached is inserted and supported through the elongated hole 6Eb formed in the slide member 6B. The elongated hole 6Eb is formed in a longitudinal direction in a direction in which the first wedge member 4A and the second wedge member 4B are close to each other and separated from each other. Therefore, the second wedge member 4B is movably supported in the direction of approaching and separating from the first wedge member 4A. The moving direction by the wedge member support portion 6E is a direction orthogonal to the sliding moving direction in which the first wedge member 4A and the second wedge member 4B are slid and moved in the wedge member moving mechanism 6. Further, in the wedge member support portion 6E, an elastic member (for example, a spring member) 6Ec that urges the second wedge member 4B to move in a direction in which the second wedge member 4B always approaches the first wedge member 4A is attached in the elongated hole 6Eb. It is preferable that it is provided between 6Ea and the slide member 6B.

Further, in the wedge member moving mechanism 6 in the present embodiment, each bolt 6A constituting the slide support portion is formed of a material having a larger coefficient of thermal expansion than the first wedge member 4A and the second wedge member 4B. .. For example, the first wedge member 4A and the second wedge member 4B are made of SS400, which is a steel material, and each bolt 6A is made of SUS304, which is a stainless steel material.

As described above, the interval adjusting device 31 of the present embodiment has a first wedge member 4A having a first inclined surface 4Aa facing the first contact portion 4Ab and facing the opposite side to the first contact portion 4Ab, and a support target portion. A second wedge member having a second inclined surface 4Ba facing the second contact surface 4Bb and facing the opposite side to the second contact surface 4Bb, and the second inclined surface 4Ba is in surface contact with the first inclined surface 4Aa of the first wedge member 4A. 4B, and at least one of the first wedge member 4A and the second wedge member 4B are supported so as to be slidable along the inclination direction of the first inclined surface 4Aa and the second inclined surface 4Ba, and the first wedge member 4A and the first wedge member 4A. A slide support portion (each bolt 6A) that supports the first wedge member 4A and the second wedge member 4B at each end portion that is formed of a material having a thermal expansion coefficient larger than that of the two wedge member 4B and extends in the slide movement direction. , A slide moving portion (each fixing nut 6C) that slides and moves at least one of the first wedge member 4A and the second wedge member 4B, a movement restricting portion (each fixing nut 6C) that regulates the slide movement, and a first wedge. A wedge member support portion 6E that movably supports one of the member 4A or the second wedge member 4B in a direction in which they approach and separate from each other is provided.

According to the interval adjusting device 31, the first wedge member 4A and the second wedge member 4B, which are the intervals between the first contact 4Ab and the second contact 4Bb due to the slide movement of the first wedge member 4A and the second wedge member 4B. When the total width changes, the first contact surface 4Ab contacts the facing surface 11 of the support portion, and the second contact surface 4Bb contacts the support target surface 10 of the support target portion, the first wedge member 4A and the second wedge member The total width of 4B fills the gap D3 between the facing surface 11 of the support portion and the support target surface 10 of the support target portion. The slide movement of the first wedge member 4A and the second wedge member 4B can be easily performed by operating each fixing nut 6C constituting the slide moving portion and the movement restricting portion. As a result, the distance between the support portion and the support target portion can be easily adjusted with high accuracy. Moreover, the slide support portion (each bolt 6A) that slidably supports at least one of the first wedge member 4A and the second wedge member 4B has a higher thermal expansion coefficient than the first wedge member 4A and the second wedge member 4B. Since it is made of a large material, the slide support portion thermally expands in the slide movement direction between the first wedge member 4A and the second wedge member 4B, so that the total width of the first wedge member 4A and the second wedge member 4B increases. Since the change is narrow, even if the support target portion thermally expands and approaches the support portion and the interval D3 changes narrowly, the contact of the support portion of the first immediate 4Ab with the facing surface 11 and the second immediate contact according to this change. The contact of the support target portion of 4Bb with the support target surface 10 can be maintained. As a result, the vibration suppression effect of the support target portion can be improved, and the vibration suppression effect can be maintained even if the support target portion heats up.

In the above-mentioned interval adjusting device 31, the first wedge member 4A and the second wedge member 4B are slidably moved, but at least one of the first wedge member 4A and the second wedge member 4B is slidably moved. Also, the same effect can be obtained.

By the way, the interval adjusting devices 1, 21, 31 in the above-described first to third embodiments are support devices for supporting heavy structures installed in the radiation controlled area, and the support portion and the support target portion. It is preferable to be provided between them. Since the work time in the radiation controlled area is limited, it is preferable that the distance between the support portion and the support target portion is adjusted accurately and easily. In this respect, the interval adjusting devices 1, 21, 31 in the first to third embodiments are installed in the radiation control area because the interval between the support portion and the support target portion can be adjusted accurately and easily. It is suitable for a support device that supports a heavy structure.

1,21,31 Spacing adjustment device 2 Support member 2A Support surface 3 Spacing ruler 3A Bolt 3B Double nut 3C Bolt fixing rib 3D Fixing nut 4 Wedge member 4A First wedge member 4Aa Inclined surface, First inclined surface 4Ab For the time being, No. 1st surface 4B 2nd wedge member 4Ba Inclined surface, 2nd inclined surface 4Bb Foreground, 2nd surface 5 Spacing ruler plate 6 Wedge member movement mechanism 6A Bolt 6B Slide member 6C Fixing nut 6D Fixing part 6E Wedge member support part 6Ea Mounting part 6Eb Long hole 10 Support target surface 11 Facing surface 101 Steam generator 102 Body 102a Lower body 102b Upper body 102c Conical body 102d Upper mirror 103 Water chamber mirror 104 Tube plate 111 Water supply pipe 112 Steam drain pipe 113, 114 Cooling water pipe 121 Loop Room 122 Partition 123 Bottom floor 131 Support leg 132 Top support 132A Ring frame 132B Support support 133 Bottom support 133A Ring frame 133B Support support D1 spacing D2 spacing D3 spacing

Claims (6)

It is an interval adjusting device provided between the support part and the support target part and adjusting the mutual distance.
A support member provided on the support target portion with the support surface facing each other,
The support member has a plurality of bolts having one end attached to the support member and a fixing nut that is screwed into the other end of each bolt to prevent the other end of each bolt from coming off from the support portion side. The support member can be movably supported with respect to the support portion and a space can be provided between the support surface and the support target portion in such a manner that the support surface is close to and separated from the support target portion. An interval defining part that fixes the position of the support member, and
A wedge member that is interposed between the support member and the support portion and is provided so as to be slidable in a direction intersecting the moving direction of the support member.
Interval adjusting device. A slide support portion that supports the wedge member so that it can be slidably moved,
A slide moving portion for sliding the wedge member, and a slide moving portion.
The movement regulation unit that regulates the slide movement,
The interval adjusting device according to claim 1. The wedge member has a first wedge member and a second wedge member provided in surface contact with each other in the moving direction of the support member, and the first wedge member and the second wedge member. The interval adjusting device according to claim 1 or 2, wherein at least one of the members is slidably movable along the inclined direction of the inclined surface. Any one of claims 1 to 3 comprising an interval defining plate interposed between the support member and the support portion together with the wedge member and removably arranged between the support member and the support portion. The interval adjusting device described in. It is an interval adjusting device provided between the support part and the support target part and adjusting the mutual distance.
A first wedge member having a first inclined surface facing the first contact portion and facing the opposite side to the first contact portion, and a first wedge member.
A second that has a second inclined surface that faces the second contact surface and faces the opposite side to the second contact surface, and the second inclined surface comes into surface contact with the first inclined surface of the first wedge member. With wedge members,
At least one of the first wedge member and the second wedge member is supported so as to be slidable along the inclination direction of the first inclined surface and the second inclined surface, and the coefficient of thermal expansion is higher than that of each wedge member. A slide support portion that supports the first wedge member and the second wedge member at each end portion that is formed of a large material and extends in the slide moving direction.
A slide moving portion that slides and moves at least one of the first wedge member and the second wedge member,
The movement regulation unit that regulates the slide movement,
A wedge member support portion that movably supports one of the first wedge member and the second wedge member in a direction in which they approach and separate from each other.
Interval adjusting device. A support device that supports heavy structures installed in a radiation controlled area.
A support device including the space adjusting device according to any one of claims 1 to 5 between the support portion and the support target portion.

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